package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.EmployeeService;
import lombok.val;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }



        //密码比对
       password = DigestUtils.md5DigestAsHex(password.getBytes());

        // TODO 后期需要进行md5加密，然后再进行比对


        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void  save(EmployeeDTO employeeDTO) {
                Employee employee = new Employee();

                //对象属性拷贝
                BeanUtils.copyProperties(employeeDTO,employee);

                //设置账号状态，1表示正常状态
                employee.setStatus(StatusConstant.ENABLE);

                //设置默认密码123456
                employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));

//                //设置当前记录的创建时间和修改时间
//                employee.setCreateTime(LocalDateTime.now());
//                employee.setUpdateTime(LocalDateTime.now());
//
//                //设置创建人ID和修改人ID
//        //TODO 获取当前登录用户的ID
//                employee.setCreateUser(BaseContext.getCurrentId());
//                employee.setUpdateUser(BaseContext.getCurrentId());


                employeeMapper.insert(employee);

    }

/**
 * 分页查询
 * @param employeePageQueryDTO
 * @return
 */
    public PageResult page(EmployeePageQueryDTO employeePageQueryDTO) {
        //开始分页查询

        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        //利用TreadLocal实现

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);

        long total =page.getTotal();
        List records = page.getResult();


        return new PageResult(total,records);
    }


    /**
     * 启用禁用员工账号
     * @param status
     * @param id
     */
    public void startOrStop(Integer status, Long id) {
//update employee set status = ? where id = ?


//
//        Employee  employee = new Employee();
//        employee.setStatus(status);
//        employee.setId(id);

        Employee employee = Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    public Employee getById(Long id) {

        Employee employee =employeeMapper.getById(id);
        employee.setPassword("****");//避免将密码返回给客户端,避免密码泄露
        return employee;
    }

    /**
     * 编辑员工信息
     * @param employeeDTO
     */
    public void update(EmployeeDTO employeeDTO) {
        //返回的是一个employee对象,此处需要转换
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);//拷贝
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());


        employeeMapper.update(employee);



    }
}
